Box-opener.



P. VRANEY.

BOX OPENER.

APPLXGATION FILED AUG. so, 1912.

Patented Feb. 2 5, 1913.

i 20 fullest extent.

*r [nutren sra'rns earner onirica.

FRANK VRANEY, or MANI-monroe, wisconsin, Assienon 'ro sirmionecor/transf, or i ROCHESTER, NEW. YORK.

BOX-OPENER.

Specification of Letters Patent.

Patented Feb.. 25,1913.

Application filed August 30, 1912. Serial No. 717,982.

State of. `Wisconsin, have invented certain new and useful Improvementsin Rox-Openers, ot which the followingl is a specification.

This invention relates to box openers, ot the type disclosed in LettersPatent No.

' 10 789,509, granted to Edward S. Savage, May

9, 1905.` The box-opener 'of said patent Y comprises a cam pivoted tothe body oi' the box and adapted to engage the edge of the cover, thecam operatingf. wlienmanually rotated, to raise the cover sutiicientlyto loosen it from the box. ln order that the cam of said opener may haveits tall et fectiveness, it is necessary to impart to'it alhalf-rotation, thus raising' the cover to its Obviously, before thecover can be replaced it is i'i eci. ssary either to turn the cam backagain to its original position, or elseto continue the rotation in `thesaine direction for another halt-rotation with the 5 saine result. Sinceit is not convenient to rotate the cani continuously'in one direction,for a complete turn, without releasing the cani and grasping; it againin a new position, two distinct manual operations are thus involved inreturning` thecain to a position which will pei-init the box-cover tobe` replaced.

The ob]ect ot'. the present invention is to produce a box-opener ot' thecani-'type in w which the cam, at'ter a partial rotation sut'- cient toraise the cover in the'intended manner, will return to normal operativeposition Without any additional rotation of the cam, so that after theopener has been op- 40 erated to open the b ox it is ready at once topermit the cover to be replaced. To this eid I employ a cani which maybe torined vlike that ot'- said patent, or otherwise, but which is notpivotcd at a fixed point. ln

place of a simple perforation closely embracing the pivot-stud, l.provide an elon' gated opening which approaches the periphery ot the camat a plurality of points, v preferably at two points diainetricallyopposed. ij\ceordingly, at'tcr the cani has been partially7 rotated toopen the box. it may have a transverse movement upon the pivotstudwithout further; rotation, thus bringing.r

it to a new operative. position.

1n the diawings :-Figure l is an elevawing having a lug 8.

tion of a box equipped with an opener embodyingz,r this invention,showing the opener in its normal position; Fig. Qris a similar View,showing thenopener partially turned, and about to become effective; Fig.3 is another similar view. but showing the opener turned to the positionof maximum eti'ecl tiveness; Fig. t is a detail, elevation of theopener: and Fig. 5 is a section on the line 5 5 of Fig. 4i;

In the ,drawings theopener is shown on a round boxsnch as is used forshoe-polish.

The box comprises a body l, and a tight-Htting cover 2 which seatsagainstan annular@ rib 3 on the body. The lower edge Lt. of the cover isturned outwardly at right angles to the body, thus constituting anannular Harige that yoverhangjns the rib 3. A cam 5 has a depressedcenter 6 and is provided with two oppositely disposed wings.7, each thebox below the rib This stud extends through the cam, and has a head soas to retain the cam in place upon the box. The stud and its head are soformed that the opener may be freely turned about the' stud as an axis.

The novel feature ot' the invention resides in the shape and location ofa slot l() in the cam. The central-portion of this slot is straightwhile at each end of' the straight portion thereis a lateral recess orpocket. 11, these recesses extending in opposite directions from thecentral lineof the slot (Fig. t). v

lt is obviousthat theposition of the cam 5 is not Xed relatively to thestud 9, but that. it may be moved across the aXisof the latte-r withinthe limitations of the slot.

ln the normal position of the device,

shown in Fig. 1, the Cain has assumed apositiou in which the stud is atthe end A'of the' straight part of the slot, and the pocket 11 liesslightly to the left 4ot the stud. 1f now, thejcanrbe grasped and turnedin a clockwise direction, it will move about the stud in the manner ofan eccentric, and the annular shoulderlQ will immediately encounter theHarige lt on tl ie f,cover. This resistl ance causes the cam to slidetoward the right until the stud 9 has engaged the bottom of the recess11 adjacent to it. The continued turning of the cam in the samedirection vmaintains the engagement' of the'stud with the pocket, andthe cam raises'jithe cover 2' A stud 9 is fixed in :d one Side, as Shownin '/Fig. 3, Al; this point, where tlie emu is released7 it is in suolia poeiion lmt slight downward pressure, or even its own weight, willCause it to move foward' the bottom of'he box, the slot l() @fleeingalong the stud 9 until. the normal position is again reached. The openeris now ready for another operation, the feo `vs which was formerly atthe bottom being ne the lfop, and in position to engage the stud; v

l claim y u l. A box-opener comprising a pivot-stud, for ailaollment toone member of e box, and

ii a eem mounted on the stud and adapted to engage the other member oftlle box7 the eem having en elongated opening? to receive the ein@ whichapproaches the operative sun' fue@ of the ozon at 'e plurality ofsepmaie points, So l'lia'tefer :1. partial i'otnion of the @um hom one(menu/rive possiion il may have e hansveise movement on the pivot iobring; it into another operative positionWithout further relation.

, 2. A looX-opene comprising e pix-oi for attachment to one member of ebox, a @am mounted on the stud and adapte engage the other membei.n of'ille box, Cain having 'an elongated opening io ieceive the sind7 whichapproaches the operetive surface of' the @am at e plurality of Seperatepointe and is transversely extended,

'et Said points, in e diceoion opposite to the normal dn'eetion ofi'otatlon of the eem.

